toki! After weekends spent on research, I present to the TP Community: the Philippine Script Series!

The .zip file contains the following:-> About: Information about the writing systems, as well as references used in my research. Please note that I do not intend for this to be academical, just for your information.-> Samples: Samples of the writing systems

Fascinating. I didn't even know there were alternate writing systems for Philippine languages, let alone that there were many of them and so complex. Seeing them, I assume they go back eventually to Indic bases, though it is hard to see at this time. The three-vowel system does present ony the one problem in tp, so any work-around for it means that system can be used petty smoothly (vowels are rarely very significant in unofficial words, it seems, but if you can work around kin-ken, you can probably find reasonable solutions generally). Thanks for this information.